>> washington, adams, jefferson, monroe, jackson, cleveland again, monroe, truman eisenhower, kennedy, johnson, now wait. nixon, ford, carter, reagan, bush, clinton, bush, obama. [ applause ] >> jimmy: that's why you're fantastic. thanks very much for coming. watch "studio 42" and bob costas. and costas tonight returns to nbc sports in may. we'll be right back with music from gary allan. >> jimmy: this is their cd. it's called "set you free." here's the song "pieces" gary allan! ♪ ♪ i've been broken torn and scattered i've loved holy i've loved sin i was rolling on the wind it didn't matter i was so ♪ ♪ sure of who i didn't want to be every smile and every fear every laugh and every tear ♪ ♪ it was all me it was all me pieces of my heart pieces of my soul pieces that i'm gonna be i don't even know ♪ ♪ i gave a lot to lovers gave a lot to friends everything i took from them made me who i am pieces we've all ♪ ♪ been lied to we've all been liars nothing's perfect in this world everybody's been burned ♪ ♪ by the fire guess i'm learning that what breaks you makes y